Collapsible bed-bolster.



F. W. RAHN.

COLLAPSIBLE BED BOLSTER.

APPLICATION FILED FEB. 20. 1914.

1, 139,71 9 Patehted May 18, 1915.

THE NORRIS PETERS CO.. F'HOTO-LITHQ. WASHINGTON D. l

insrrnn st rts earns ora on.

FRIDRICI-I w. Benn, or CHICAGO, ILLINOIS.

COLLAPSIBLE BED-BoLsrna.

, Specification of Letters Patent.

Patented May18, 1915.

Application filed February 20, 1914. Serial No. 819,918.

provided with; improved means for securing the parts together, the present invention constituting an improvement over my prior invention as set forth in Patent No. 1,082,171, dated December 23, 1913'. I l

The invention consists in the combinations and arrangements of "parts hereinafter de-, scribed and claimed. p

The invention willbe best understood by reference to the accompanying drawing forming a part of this specification, and in which,

Figure 1 is a perspective view, with portions broken away, of a bed bolster embodying my present invention, Fig. 2, a section taken substantially on the plane of the line era-00 of Fig. 1, Fig. 3, a section taken on the plane of line y-y of Fig. 2, Fig. 4:, a perspective view of a metallic ring employed in the construction, and Fig. 5, a section taken on line ez of Fig- 1. The preferred form of construction as illustrated in the drawing comprises two sheet metal disks 1 arranged at the ends of a flexible member 2 of canvas or other suit able fabric and having its ends 3 folded inwardly over end members 1,,-- said flexible member being arranged in substantially cylindrical form-with a longitudinal opening at one side adapted to permit of the insertion of articles therein. The ends 3 are secured in place bymeans of tangs 4 formed on the edges of metallic rings 5 which are also provided with tangs 6 at their inner edges, said tangs 6 being inserted through a central opening inthecorresponding disk 1 and clenched over the inner faces thereof as shown in Fig. 3. Suitable ornamental caps 7 are arranged over disks 5 to protect the same and present an ornamental appear ance. This constitutes asimple and effective means for securing the ends of the flexible member 2.

.thus'facilitates insertion and removal thereof. At theirother ends each of the stretcher members is provided with a threaded extension or head member 14: provided witha head flange 15 taking against the face of the corresponding disk 1 and with a progection 17 taking into corresponding openings in the corresponding end disk 1. Each of the heads' 14 isprovided with asquare opening 17 in its end and a key 18 is provided to fit said openings and thus serve as a means of turning the heads 14.- on the corresponding stretcher members and thus stretching flexible member 2 as will be readily understood. I

Arms 19 are slidably mounted on the inner faces of disks 1 and are connected at their inner ends with oppositely disposed crank pins 20 on a rotatable disk21. Each of the disks 21is operated by means of an arm 22 having a perforation 23 therein adapted to of which the corresponding disk 21 will be locked in central position as indicated in Figs. 1 and 2. Arms 19 are provided with notches at their outer'ends adapted to receive the corresponding stretcher members 8 and lips 25 are provided on the inner faces of the disks 1 and adapted to'engage the heads on the corresponding stretchermembers 8 as saidstretcher members are drawn together by the operation-of the lever arm 22. By this arrangement it willbe observed that the flexible member 2 may be stretched laterally and at the same time the stretcher members automatically locked, against displacement. A swinging brace 26is arranged centrally in the receptacle and has its ends hingedly connected with the stretcher members 8 and servesasa means for holding the central portion of the receptacle in distended form as will be readily understood.

' Copies ofthis patent may be obtained for While Ihave illustrated and described the preferred form of construction for carrying my invention into effect, this is capable of variation and modification without depart-V, ing from the spirit of the invention.

I therefore, do notwish to be limited to the precise'details of construction set forth, but

desire to avail myself of such variations and modifications as come within the scope of the appended claims. 7 Having described my invention what I claim as new and desireto secure by Letters key holes in their ends; there being cor're-f sponding'openings; in the abutting end member; and shoulders on said heads engaging against the inner sides-of'said end members;

substantially as described:v

2-. A device of the class'des'cribed comprising two end members; a flexible member'sefiv cnts each, by addressing Washington, D. 0'. 1 7

cured to said end'members to form a receptacle open at one side; stretcher members attached to said flexible member at the edges of said opening and bearing against the inner fac'e'of one of said members; extensible heads threaded to the other ends of said stretcher members and provided with key holes in their ends, there being correspond- 1 ing openings in the abutting end member 7 and said heads extending into said openings; and stop flanges on said heads abutting the end member, substantially as: described. 7

3. A device of the class described compris' ing twocentrally perforated end members; a flexible head h'aving its ends "folded in over said end members; and metalrings having tangs at; their outer edges clenched through said'folded nd and tangs at their inner edges clenched through the perfora- 1' tion in said end members, substantially as described. a 1

In testimony whereof have sig ned my name, to this specification in the presence of two subscribing witnesses. z .t I

- FRIDRIGH W. RAHN.

Witnesses: y 1 g JosHUA .R-f Pom,

HELEN F; Lrmirs.

the Commissioner of Patents? 

